Men govern nothing with more difficulty than their tongues, and can moderate their desires more than their words.

Hatred is increased by being reciprocated, and can on the other hand be destroyed by love.

...The body is affected by the image of the thing, in the same way as if the thing were actually present.

If we conceive that anyone loves, desires, or hates anything which we ourselves love, desire, or hate, we shall thereupon regard the thing in question with more steadfast love, etc. On the contrary, if we think that anyone shrinks from something that we love, we shall undergo vacillation of the soul.

Fear cannot be without hope nor hope without fear. [They are the two sides of a coin, so learning how to manage fear through learning, understanding, rationality, controlled imagination, preparation, mental focus (including distraction) and a gratitude attitude is very helpful.]

I have resolved to demonstrate by a certain and undoubted course of argument, or to deduce from the very condition of human nature, not what is new and unheard of, but only such things as agree best with practice.

The idea, which constitutes the actual being of the human mind, is not simple, but compounded of a great number of ideas.